1.Leaves paripinnate, leaflets serrate; fruit lobed into 2 schizocarps, usually only 1 developed, longer than 2 cm.
偶数羽状复叶，小叶有锯齿；进2分果，通常仅1发育，长于2厘米浅裂的果。
2.Leaves usually paripinnate, alternate, estipulate, usually petiolate;
叶通常偶数羽状，互生，，通常具叶柄；
3.Leaves paripinnate, rarely simple, alternate, estipulate;
偶数羽状复叶，很少单，互生，无托叶；
4.Leaves paripinnate, axis (including petiole) 25-39 cm, triangular in transverse section, nearly smooth;
偶数羽状复叶，轴包括叶柄25-39厘米，三角形横切面，近平滑；
5.Leaves fascicled at branch apices, paripinnate, 9-12 cm;
叶在枝顶簇生，偶数羽状，9-12厘米；
6.Leaves paripinnate; petiole 2. 5-4 cm, reddish brown including axis;
偶数羽状复叶叶柄2.5-4厘米，红棕色包括轴；